442700/A
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Preventive maintenance procedures
Topics
Checking the environmental conditions in the sonar room, page 279
Inspecting and cleaning the display, page 280
Inspecting and cleaning the Processor Unit, page 281
Inspecting and cleaning the Operating Panel, page 282
Inspecting and cleaning the Transceiver Unit, page 282
Visual inspection of the hull unit, page 283
Visual inspection of the installation trunk, page 284
Inspecting and cleaning the transducer face, page 286
Painting the transducer face, page 289
Inspecting and replacing sacrificial anodes, page 292
Lubricating the hoisting spindle, page 293
Lubricating the transducer shaft sleeve, page 294
Checking the environmental conditions in the sonar room
It is important that the sonar room is kept dry. The CS90 units must not be exposed to
excessive temperatures, moisture or humidity. Such conditions can cause corrosive attacks
and subsequent failures to the electronic circuitry. Visit the sonar room at regular intervals
to check temperature and humidity, and take the necessary actions if the environmental
conditions are poor.
Prerequisites
The following specific instruments are required for this task:
• Thermometer
• Hygrometer
Procedure
1
Measure the ambient temperature in the room.
2
Measure the relative humidity in the room.
Summary of Contents for Simrad CS90
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